3 years ago

-21

1 answer:

5 0

Answer:

-21

Step-by-step explanation:

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noname [10]

Answer:

Step-by-step explanation:

$cos~L=\frac{m^2+n^2-l^2}{2mn} \\=\frac{5^2+8^2-7^2}{2*5*8} \\=\frac{25+64-49}{80} \\=\frac{40}{80} \\=\frac{1}{2} \\=cos 60\\$

∠L=60°

5 0

1 year ago

Alex Ar [27]

Answer:

x = ± $\sqrt{20}$

Step-by-step explanation:

Given

x² = 20 ( take the square root of both sides )

x = ± $\sqrt{20}$

which can be simplified to

x = ± 2 $\sqrt{5}$

[ ± means plus or minus ]

5 0

2 years ago

romanna [79]

Wouldn’t the answer be 8 and 3

6 0

2 years ago

lisabon 2012 [21]

Just a guess but I think it is 0.43. By dividing the decimal 0.02 into the Denominator

4 0

2 years ago

fiasKO [112]

Answer:

quotion is 104 and remainder is 6

4 0

1 year ago